CA1189683A - Methode de recuperation de certains constituants dans les circuits de residus de la preparation de l'uree - Google Patents

Methode de recuperation de certains constituants dans les circuits de residus de la preparation de l'uree

Info

Publication number
CA1189683A
CA1189683A CA000402910A CA402910A CA1189683A CA 1189683 A CA1189683 A CA 1189683A CA 000402910 A CA000402910 A CA 000402910A CA 402910 A CA402910 A CA 402910A CA 1189683 A CA1189683 A CA 1189683A
Authority
CA
Canada
Prior art keywords
urea
solution
column
ammonia
waste stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000402910A
Other languages
English (en)
Inventor
Adolphe M. Douwes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unie Van Kunstmestfabrieken BV
Original Assignee
Unie Van Kunstmestfabrieken BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unie Van Kunstmestfabrieken BV filed Critical Unie Van Kunstmestfabrieken BV
Application granted granted Critical
Publication of CA1189683A publication Critical patent/CA1189683A/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fertilizers (AREA)
CA000402910A 1981-05-15 1982-05-13 Methode de recuperation de certains constituants dans les circuits de residus de la preparation de l'uree Expired CA1189683A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8102391A NL8102391A (nl) 1981-05-15 1981-05-15 Werkwijze voor het winnen van waardevolle bestanddelen uit de afvalstromen verkregen bij de ureumbereiding.
NL8102391 1981-05-15

Publications (1)

Publication Number Publication Date
CA1189683A true CA1189683A (fr) 1985-07-02

Family

ID=19837514

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000402910A Expired CA1189683A (fr) 1981-05-15 1982-05-13 Methode de recuperation de certains constituants dans les circuits de residus de la preparation de l'uree

Country Status (7)

Country Link
US (1) US4652678A (fr)
EP (1) EP0066906B1 (fr)
JP (1) JPS57193439A (fr)
AT (1) ATE17473T1 (fr)
CA (1) CA1189683A (fr)
DE (1) DE3268497D1 (fr)
NL (1) NL8102391A (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0302213A1 (fr) * 1987-08-04 1989-02-08 Ammonia Casale S.A. Procédé pour la récupération de l'urée entraînée par des vapeurs dans des systèmes de concentration à vide
US5139754A (en) * 1989-09-12 1992-08-18 Fuel Tech, Inc. Catalytic/non-catalytic combination process for nitrogen oxides reduction
US5240688A (en) * 1990-08-01 1993-08-31 Fuel Tech Gmbh Process for the in-line hydrolysis of urea
DE59105265D1 (de) * 1991-01-30 1995-05-24 Stadt Landshut Vertreten Durch Verfahren zur Rauchgasreinigung von Feuerungsanlagen, insbesondere Müllverbrennungsanlagen.
US5223238A (en) * 1992-01-16 1993-06-29 The M. W. Kellogg Company Method for treating ammonia and urea condensates
US5316554A (en) * 1992-06-03 1994-05-31 Hansen Charles N Method for processing crystalline ammonium carbamate
US6077491A (en) * 1997-03-21 2000-06-20 Ec&C Technologies Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
KR100398799B1 (ko) * 2001-04-04 2003-09-19 한화석유화학 주식회사 질소 함유 유기물을 포함하는 폐수의 처리공정
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US20030211024A1 (en) * 2002-05-10 2003-11-13 Wojichowski David Lee Methods of converting urea to ammonia for SCR, SNCR and flue gas conditioning
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
DE10346519A1 (de) * 2003-10-02 2005-05-04 Uhde Gmbh Verfahren zur Entfernung von Ammoniak und Staub aus einem Abgas, das bei der Herstellung von Düngemitteln anfällt
US20080267837A1 (en) * 2007-04-27 2008-10-30 Phelps Calvin E Conversion of urea to reactants for NOx reduction
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
UA123673C2 (uk) 2015-12-21 2021-05-12 Стамікарбон Б.В. Виробництво карбамідо-аміачної суміші
JP6949693B2 (ja) * 2017-12-08 2021-10-13 東洋エンジニアリング株式会社 尿素、アンモニア及び二酸化炭素を含む水溶液の処理方法並びに処理設備
EP3782979A1 (fr) * 2019-08-20 2021-02-24 Yara International ASA Préparation de solution d'urée et installation associée
WO2023156360A1 (fr) 2022-02-18 2023-08-24 Thyssenkrupp Industrial Solutions Ag Préparation de condensat de traitement optimisée
LU102914B1 (de) * 2022-02-18 2023-08-18 Thyssenkrupp Ind Solutions Ag Optimierte Prozesskondensataufbereitung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854482A (en) * 1956-07-07 1958-09-30 Lonza Electric & Chem Works Process for the manufacture of urea
US3025571A (en) * 1960-01-29 1962-03-20 Du Pont Process for producing prilled urea of low biuret content
JPS5146120B2 (fr) * 1973-08-22 1976-12-07
US3971390A (en) * 1974-06-03 1976-07-27 Sperry Rand Corporation Stone trap for threshing and separating machine
CA1070930A (fr) * 1974-09-30 1980-02-05 Philip F. Kaupas Depollution d'une usine de produits fertilisants
JPS5268129A (en) * 1975-12-05 1977-06-06 Mitsui Toatsu Chem Inc Recovery of unreacted material and heat on urea synthesis
IT1068268B (it) * 1976-09-09 1985-03-21 Snam Progetti Procedimento per la produzione di urea e purificazione delle acque
US4341640A (en) * 1976-09-27 1982-07-27 Standard Oil Company Urea hydrolysis
IT1065422B (it) * 1976-12-23 1985-02-25 Snam Progetti Processo ammoniaca-urea integrato per la produzione di urea
US4087513A (en) * 1977-08-12 1978-05-02 Olin Corporation Method of hydrolyzing urea contained in waste water streams
IT1174366B (it) * 1978-07-24 1987-07-01 Ortu Francesco Decompositore di carbammato per produzione industriale di urea

Also Published As

Publication number Publication date
EP0066906B1 (fr) 1986-01-15
US4652678A (en) 1987-03-24
DE3268497D1 (en) 1986-02-27
NL8102391A (nl) 1982-12-01
ATE17473T1 (de) 1986-02-15
EP0066906A1 (fr) 1982-12-15
JPS57193439A (en) 1982-11-27

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Legal Events

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